22049279 has 4 divisors (see below), whose sum is σ = 25199184. Its totient is φ = 18899376.

The previous prime is 22049233. The next prime is 22049281. The reversal of 22049279 is 97294022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22049279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22049579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574942 + ... + 1574955.

It is an arithmetic number, because the mean of its divisors is an integer number (6299796).

Almost surely, 2^22049279 is an apocalyptic number.

22049279 is a deficient number, since it is larger than the sum of its proper divisors (3149905).

22049279 is an equidigital number, since it uses as much as digits as its factorization.

22049279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149904.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 22049279 is about 4695.6659804547. The cubic root of 22049279 is about 280.4129917403.

The spelling of 22049279 in words is "twenty-two million, forty-nine thousand, two hundred seventy-nine".